Godfrey-Smith spends nearly every summer in his native Sydney. His love of diving in the city’s harbor bore scientific fruit when he captured a rare photograph of gloomy octopuses (Octopus tetricus) mating and published his observations of the event in a short paper with marine biologist Christine Huffard of Conservation International Indonesia (Moll Res, 30:81-86, 2010). Godfrey-Smith started teaching himself about octopus biology, focusing on their nervous systems and brains.